Railway-frog.



H. G. ELPBORG'.

RAILWAY PROG.

APPLICATION FILED APR. 21, 1911. l 1,037,880, Patented'Sept. 10, 19.12.

2 SHEETS-SHEET 1.

H. G. BLFBORG.

RAILWAY FROG.

UNrTED STATES (PATENT oEEIcE.

HENRY Gr. ELFBORG, OF CHICAGO, ILLINOIS, ASSIGNOR TO AJAX FORGE COMPANY 0F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS. j n

RAILWAY-FROG.

Specification of Letters Patent.

Application filed April 21, 1911. Serial N o. 622,496. I

To all whom 'it may concern.'

Be it known that I, HENRY G. ELEBORG, a citizen `of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Railway-Frogs, of which the following is a specification.

The object of my inventionis to provide certain improvements, the nature of which will more fully appear from the following description and from the drawings, in a railway frog of the type described in my Patent No. 940,863, granted November 23, 1909.

In the drawings-Figure l is a plan View showing my improved frog in position in connection with a railway track and switch. Fig. 2 is an enlarged plan view of the frog and part of the connected rails. Fig. 3 is a horizontal section of the heel end of the frog, the section being taken on the plane 3 of Fig. 4. Fig. 4 is a perspective view of the heel end of the frog. Fig. 5 is a fragmentary elevation view of the heel end of the frog and the connected rail. Fig. 6 is a vertical section on the plane 6 of Fig. 5. Figs. '7, 8 and 9 are transverse sections on the planes 7, 8 and 9 of Fig. 2.

As stated in my prior patent above referred to, the wear upon railway frogsis much more rapid., as the result of the violent blows to which they are subjected, than upon other parts of a railway track. In order tov overcome this diiculty it has previously been proposed to construct the frog point and some of the adjacent parts of manganese-steel, or other hard alloy, but the use of such devices has developed other dif- Iiculties at the point of junction between the hard alloy and steel rails, and the assemblage of the parts in some instances leads to more or less difficulty on account of their complicated form.

As clearly shown in Figs. 2 and 4 of the drawings and other views, I construct the hard metal frog in a single integral piece, the wing rails v and point rails terminating at the ends thereof, and substitute for the wing rails integral wing flanges 1, cast upon and forming part of the frog. Taken in its entirety, my improved frog includes in a single integral structure base flanges 2, vertical webs 8, connected by a Hoor plate 3, a point 4, wing flanges l, transverse strengthening webs 6 extending between the base flanges and wing flanges, transverse strengthening webs 7 between the vertical webs 8, .and end extensions for the attachment of the rail. At the toe end'of the frog,-that is the left end as viewed in Fig. 2-the wing flanges l are continued beyond the base of the frog, forming extensions 9 between which the ends of the rails 10-10 are secured by a wedge 30, and bolts 3l, as fully described in another applicaticn filed by me on the date of filing of this application. Detailed description of this part of the structure is unnecessary'in this application as I make no claim vthereto herein, but claim the same in my said co-pending application.

At the heel end of the frog the toe 4 is extended beyond the remainder of the structure forming a projection 40 to which the rails 4l are adapted to be secured. The project-ion 40 is formed by continuing the vertical webs 8 and the part of the floor plate 3, which at this point is merged in the point 4, outwardly beyond the remainder of the structure. In its general outlines, therefore, the projection 40 includes a horizontal top and vertical side walls inclosed at the end by a vertical end wall 42. The base flanges 2 terminate at the point 43. The ends of the rails 41 are bent and the heads tapered, as shown in Fig. 2, in order to form a diagonal joint with the projection 40, vas more fully set forth in my prior patent above referred to, and at the base of the projection 40 lips 44 spaced from the base of the projection 40 project outwardly to form pockets or notches for the reception of the ends of the rails 4l. The diagonal joints formed between the rails 4l and the projections 40, as explained in my prior patent, minimize the shock caused by the passage of wheels from the rails to the frog structure.

In order to reinforce the frog structure against the stress caused by the pressure of wheels and the sudden imposition thereon of the weight'of the rolling stock, I provide a web 45 extending transversely between the vertical webs 8 of the frog structure and integral therewith. The web 45 extends between points situated upon opposite sides of the base of the projection 40, and spans across the point of junction between the extreme ends of the rails 41 and the frog structure. This web 45, as shown in Fig. 6, may incline upwardly from the base of the frog structure and then be carried outward horizontally so that it will lie just above the base of the trafiic rail 4l. The provision of this web at this particular point adds greatly to the strength of the structure without causing any material increase in its weight or the amount of metal used. The web obviates all danger of fracture of the frog structure at the point of junction between its base fianges 2 and vertical webs 8 opposite the ends of the rails 4:1. In the structure illustrated I have shown transverse fillets 46 extending between the vertical webs 8 of the projection 40 in which the bolt holes are formed for the bolts which secure the rails .il in posit-ion. These fillets 46 serve to impart rigidity to the projection 40.

While I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit of my invention.

I claim:

l. A railway frog comprising in one inte gral structure a floor plate having a point and wing flanges formed thereon, side walls depending from said ioor plate, said side walls and the part of the floor plate between said side walls extending outwardly beyond the remainder of the structu-re to form a rail joint projection, and a substantially horizontal web joining said side walls and extending longitudinally from a point out side of the base'of said projection to a point inside thereof.

2. A railway frog comprising in one integral structure a floor plate having a point and wing flanges formed thereon, side walls depending from said floor plate, said side walls and the part of the Hoor plate between said side walls extending outwardly beyond the remainder of the structure to form a rail joint projection, rails secured to said rail joint projection, and a substantially horizontal web integral with and joining said side walls and extending longitudinally across t-he extreme ends of said rails.

3. A railway frog comprising in one integral structure a floor plate having a point and wing flanges formed thereon, side walls depending from said floor plate, base flanges projecting outward fromsaid side walls, the part of said side walls above the base flanges and the part of the floor plate between the side walls extending outwardly beyond the remainder of the structure to form a projection for connection with the point rails, and a .substantiallyhorizontal web joining said side walls and extending longitudinally across the junction between the main body of said side walls and the projecting part thereof.

4. A railway frog comprising in one integral structure a floor plate having a point and wing anges formed thereon, side walls depending from said floor plate, said side walls and the part of the floor plate between said side walls extending outwardly beyond the remainder of the structure to form a rail joint projection, a substantially horizontal web joining said side walls and extending longitudinally from a point outside of the base of said projection toa point inside thereof, and fillets connecting said side walls, said projection being provided with transverse bolt holes extending through said fillets.

In testimony whereof, I have subscribed my name.

HENRY Gr. ELFBORG.

Vitnesses HENRY A. PARKS, FLORENCE A. FLORELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

